package org.linphone.views;

/*
MultiLineWrapContentWidthTextView.java
Copyright (C) 2019 Belledonne Communications, Grenoble, France

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

import android.annotation.SuppressLint;
import android.content.Context;
import android.text.Layout;
import android.util.AttributeSet;
import android.widget.TextView;
import androidx.annotation.Nullable;

/**
 * The purpose of this class is to have a TextView declared with wrap_content as width that won't
 * fill it's parent if it is multi line
 */
@SuppressLint("AppCompatCustomView")
public class MultiLineWrapContentWidthTextView extends TextView {

    public MultiLineWrapContentWidthTextView(Context context) {
        super(context);
    }

    public MultiLineWrapContentWidthTextView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public MultiLineWrapContentWidthTextView(
            Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onMeasure(int widthSpec, int heightSpec) {
        int widthMode = MeasureSpec.getMode(widthSpec);

        if (widthMode == MeasureSpec.AT_MOST) {
            Layout layout = getLayout();
            if (layout != null) {
                int maxWidth =
                        (int) Math.ceil(getMaxLineWidth(layout))
                                + getTotalPaddingLeft()
                                + getTotalPaddingRight();
                widthSpec = MeasureSpec.makeMeasureSpec(maxWidth, MeasureSpec.AT_MOST);
            }
        }

        super.onMeasure(widthSpec, heightSpec);
    }

    private float getMaxLineWidth(Layout layout) {
        float max_width = 0.0f;
        int lines = layout.getLineCount();
        for (int i = 0; i < lines; i++) {
            if (layout.getLineWidth(i) > max_width) {
                max_width = layout.getLineWidth(i);
            }
        }
        return max_width;
    }
}
